can anyone please tell me whats wrong with my session? - php

Question

I'm trying to add an announcement with the need of the user [ id] who posted it and I was going to take it via session I don't know its not working I keep getting this error (Fatal error: Cannot redeclare check_login() (previously declared in C:\xamppp2\htdocs\session.php:17) )
and I'm trying to insert current time and date separately is (date(),now()) are the right functions? I'm trying to insert those too, could you guys possibly help? here's my code
I included the session on top of my page
<?PHP include('session.php');?>
and here's the rest of my php file
<?PHP
$link = mysql_connect('localhost','root','');
if (!$link) {
die('Could not connect :' . mysql_error());
}
$Selected= mysql_select_db("elearningg", $link);
if (!$Selected) {
die("Could not connect: " . mysql_error());
}
if(!empty($_POST))
{
$msg = '';
$error = '';
$title = $_POST['title'];
$desc = $_POST['desc'];
if(trim($title) == '')
{$error = 'Please enter event title';}
else if(trim($desc) == '')
{$error = 'Please enter description ';}
$IID =$_SESSION['userid'];
if($error=='') {
$qry6="INSERT INTO announcement (`Atitle`,`Adescription`,`Adate`,`Atime`,`IID`) VALUES
('$title','$desc',date(),now(),$IID)" ;
$result6=mysql_query($qry6);
$msg = " Announcement is added ";
}
}
mysql_close($link);
?>
and here's my actual session script..
if (!$link) {
die('Could not connect :' . mysql_error());
}
$Selected= mysql_select_db("elearningg", $link);
if (!$Selected) {
die("Could not connect: " . mysql_error());
}
ob_start();
session_start();
function check_login(){
if(!empty($_SESSION['userid'])){
return 1;
}else{
return 0;
}
}
?>

Answer 1

This isn't a session problem. You are as your error message says trying to redeclare check_login().
You can only declare a function once.
So depending on how your files are structured you need to make sure that that function is only declared once. Perhaps you use includes in your files. You either need to make sure it isn't redeclared so think about how you structure it so that doesn't happen or use require_once, this adds more overhead to your script though.
http://php.net/manual/en/function.require-once.php